How many movies have Ernst Grabbe and Heidi Mahler acted in together?

They have worked on 13 movies together! Their first movie together was Ohnsorg Theater - Das schlechte Gewissen (1965) while their highest rated movie together was Ohnsorg Theater - Das Herrschaftskind (1972). They have not worked together since Ohnsorg Theater - Ein Mann ist kein Mann (1989). They are most known for their comedy films together.